[clang-tools-extra] [clang-tidy][doc][NFC] extract common global options in doc (PR #119842)

[Congcong Cai via cfe-commits]

HerrCai0907 wrote:

but in code level, we already use the getLocalOrGlobal. but unfortunately, i don't find any description about it. we should have the relative clean map between what we did in code and what we write in doc.
Those three options is not from my personal preferences. they are from current status of code.

https://github.com/llvm/llvm-project/pull/119842